True Blue certifies lithium emergency power supply

True Blue Power has certified the TS835-5 lithium-ion emergency power supply with 28-volt output plus integrated 5-volt output for special lighting requirements.

New lithium-ion technology creates a lightweight power supply that is a direct replacement for heavier, lead-acid PS-855 models, which require frequent maintenance and have considerably shorter life expectancies, according to company officials. The TS835-5 automatically recharges during normal flight operations and provides uninterrupted power to flight-critical avionics during an electrical system interruption or failure, officials said.

“The TS835-5 has been developed in direct response to customer requirements for an emergency power supply with 5-volt output for instrument panel lighting,” explained True Blue Power’s Tom Genovese. “It utilizes the same rack, connector, wire harness, OFF/ARM/TEST switch as the PS-855. It is 66% lighter, much easier to service and has an unparalleled life expectancy of 10 years.”

The TS835 Series (TS835-1, TS835-5) utilizes Nanophosphate lithium-ion cell chemistry, which offers advantages over lead-acid chemistry, he said. A significant weight savings contributes to payload efficiency, while the improved life expectancy is more than double that of legacy models. “The TS835-5’s extended service life and relatively low-maintenance requirements justify the notion that the unit virtually pays for itself over time,” Genovese added.

The TS835-5 was specifically designed for a broad range of business aircraft, including Cessna Citations, the Pilatus PC 12, and rotor-wing models, such as Bell Helicopter and Sikorsky. It is TSO C179 certified and Part 23 AML STC pending.

For more information: 316-630-0101, or



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